ambusher vs disparagement

ambusher and disparagement both are nouns.

Word	Noun	Adjective	Verb	Adverb
ambusher	Yes	No	No	No
disparagement	Yes	No	No	No

ambusher (noun)	disparagement (noun)
an attacker who waits in a concealed position to launch a surprise attack	the act of speaking contemptuously of
	a communication that belittles somebody or something